The UMI Performance rear upper control arm hardware kit includes the hardware needed to install one upper rear control arm on 1959 to 1970 Chevrolet B-body vehicles. The kit uses 5/8 inch grade 8 bolts and lock nuts, with bolts measuring 4.35 inches long with a 5/8-18 thread and a 5/8 inch hex head in steel with a cadmium finish. One kit covers a single upper control arm, so installing both upper control arms requires two kits.
Specifications:
- Rear upper control arm mounting hardware kit
- 5/8 inch grade 8 bolts and lock nuts
- Bolt length: 4.35 in
- Bolt thread: 5/8-18 in
- Hex head: 5/8 in
- Steel with cadmium finish
- Covers one upper control arm (two kits needed for both)
- Part number: 3606
Vehicle Applications:
- 1959 Chevrolet Bel Air
- 1960 Chevrolet Bel Air
- 1961 Chevrolet Bel Air
- 1962 Chevrolet Bel Air
- 1963 Chevrolet Bel Air
- 1964 Chevrolet Bel Air
- 1965 Chevrolet Bel Air
- 1966 Chevrolet Bel Air
- 1967 Chevrolet Bel Air
- 1968 Chevrolet Bel Air
- 1969 Chevrolet Bel Air
- 1970 Chevrolet Bel Air
- 1959 Chevrolet Biscayne
- 1960 Chevrolet Biscayne
- 1961 Chevrolet Biscayne
- 1962 Chevrolet Biscayne
- 1963 Chevrolet Biscayne
- 1964 Chevrolet Biscayne
- 1965 Chevrolet Biscayne
- 1966 Chevrolet Biscayne
- 1967 Chevrolet Biscayne
- 1968 Chevrolet Biscayne
- 1969 Chevrolet Biscayne
- 1970 Chevrolet Biscayne
- 1959 Chevrolet Impala
- 1960 Chevrolet Impala
- 1961 Chevrolet Impala
- 1962 Chevrolet Impala
- 1963 Chevrolet Impala
- 1964 Chevrolet Impala
- 1965 Chevrolet Impala
- 1966 Chevrolet Impala
- 1967 Chevrolet Impala
- 1968 Chevrolet Impala
- 1969 Chevrolet Impala
- 1970 Chevrolet Impala
FAQ
What does the UMI Performance rear upper control arm hardware kit fit?
It fits 1959 through 1970 Chevrolet B-body vehicles, including the Bel Air, Biscayne and Impala.
What hardware is included?
The kit includes 5/8 inch grade 8 bolts and lock nuts. The bolts measure 4.35 inches long with a 5/8-18 thread and a 5/8 inch hex head, in steel with a cadmium finish.
How many control arms does one kit cover?
One kit covers a single upper control arm. Installing both upper control arms requires two kits.
Is this the upper or lower control arm hardware kit?
This kit is for the rear upper control arms. A separate kit is offered for the rear lower control arms.

